The term 'Lumber Tree' refers to two different types of trees, the ELM and the Redoak. The ELM is a deciduous tree that is native to Europe, Asia, and North America. It is known for its distinctive bark and its ability to withstand harsh weather conditions. The Redoak is a species of oak tree that is native to North America and is commonly used for lumber. It is known for its strong wood and its resistance to rot and decay. Both the ELM and the Redoak are popular choices for lumber and are often used in construction and furniture making.